DFTEST M1 m_print begin (pkthdr.len=8, m_len=0 lead)
panic: assertion "(outb != NULL && inb != NULL && outlen >= MIN_OUTBLEN)" failed in hexncpy at /usr/src/sys/libkern/hexncpy.c:52
cpuid = 4
Trace beginning at frame 0xfffff80117d096d8
hexncpy() at hexncpy+0xdb 0xffffffff809d6b6b 
hexncpy() at hexncpy+0xdb 0xffffffff809d6b6b 
m_print() at m_print+0x55 0xffffffff806bf825 
sysctl_df_hexncpy() at sysctl_df_hexncpy+0x3fc 0xffffffff809d6f6c 
sysctl_root.isra.5() at sysctl_root.isra.5+0x166 0xffffffff80683d66 
userland_sysctl() at userland_sysctl+0x111 0xffffffff80684101 
Debugger("panic")

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdad59(%rip)
db>